Phylloscopus claudiae
Silhouette: Jiekun He · PhyloPic
In 3 days ~10% in a week ~20%
Claudia's leaf warbler (Phylloscopus claudiae) is a leaf warbler found only in China. Its natural habitat is temperate forests. Most taxonomists previously considered it to be a subspecies of the Blyth's leaf warbler. Olsson, U., P. Alström, P.G.P. Ericson, and P. Sundberg. 2005. Non-monophyletic taxa and cryptic species - evidence from a molecular phylogeny of leaf-warblers (Phylloscopus, Aves). Molecular Phylogenetics and Evolution 36: 261–276.
Rheindt, F.E. 2006. Splits galore: the revolution in Asian leaf warbler systematics. BirdingASIA 5: 25–39. Wikipedia →
| # | Park | Country | Daily sighting probability |
|---|---|---|---|
| 1 | Khao Yai National Park | 🇹🇭 Thailand | |
| 2 | Jiuzhaigou National Park | 🇨🇳 China | |
| 3 | Doi Inthanon National Park | 🇹🇭 Thailand | |
| 4 | Cuc Phuong National Park | 🇻🇳 Vietnam | |
| 5 | Kaeng Krachan National Park | 🇹🇭 Thailand |
Rare
Under 5% of wildlife watchers report a Claudia's Leaf-Warbler sighting in Kaeng Krachan National Park on a given day, based on 140 verified sightings from GBIF citizen-science data from 2019 to 2026. It is the 207th most-seen of the 360 birds we can rate there. Over three days the chance rises to about 10%, and over a week to about 20%, if each day is a fresh chance.
February–March and December
In those months about 10% of wildlife watchers report a Claudia's Leaf-Warbler in Kaeng Krachan National Park on a given day, against under 5% in January and April–November, the lowest months. Those are among Kaeng Krachan National Park's driest months, with about 45 mm of rain a month against 260 mm in September.
Between 2 and 5 am
Across all the parks we cover, that three-hour window holds the most Claudia's Leaf-Warbler sightings with a recorded time, and about half of them come between 6 pm and 6 am: it is most active around dawn and dusk.
5th of 5
Of the 5 parks where we can rate Claudia's Leaf-Warbler sightings, Kaeng Krachan National Park ranks 5th at under 5%. The best odds are in Khao Yai National Park (Thailand, about 20%), Jiuzhaigou National Park (China, about 20%) and Doi Inthanon National Park (Thailand, about 10%).
Same genus: Phylloscopus
The closest relatives of the Claudia's Leaf-Warbler that you can see in Kaeng Krachan National Park (genus Phylloscopus, Leaf Warblers) are Yellow-browed Warbler (about 30%), Two-barred Warbler (about 20%) and Sulphur-breasted Warbler (about 10%), with each one's daily chance of a sighting.
GBIF citizen-science records
It is estimated from how often the Claudia's Leaf-Warbler is recorded against all the birds logged in Kaeng Krachan National Park (140 verified sightings from 2019 to 2026), calibrated against known sighting rates. Figures are rounded to the nearest 10% because citizen-science data supports honest approximations, not decimals, and months with records from fewer than five people show "—". How it works.
